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About the Role

Software Engineers at The Trade Desk are end-to-end owners responsible for designing, building, and delivering data-focused products. This role offers the opportunity to work on large-scale distributed systems, petabyte-scale data challenges, machine learning, and advanced visualizations in an agile environment focused on quality at scale. The SCORE team specifically focuses on the backend health, performance, and reliability of a core platform component, including APIs and reporting systems, with a growing scope into AI agent infrastructure.

Responsibilities

Design, build, and operate backend systems supporting a high-traffic web and data platform.
Act as a technical reviewer and mentor in design and code reviews.
Drive technical direction on ambiguous, cross-cutting problems, balancing reliability, performance, and delivery speed.
Partner with adjacent teams and platform governance groups to align on shared standards and systems.
Take on direct management of a senior engineer with potential to lead a larger team.
Run regular 1:1s, own performance and growth conversations, and participate in hiring.
Represent your team's technical direction and staffing needs in cross-functional planning.
Welcome ideas that are different from your own and foster diversity.
Operate at a Staff engineer level, providing guidance on complex problems.
Take ownership of production systems.
Learn quickly and find solutions to complex problems using optimal tools.

Requirements

Hands-on experience building and operating backend systems for a web or data platform of meaningful scale.
Experience with C#/.NET and SQL is a strong plus.
Experience designing or building GraphQL and/or REST APIs is a plus.
Experience with reporting or scheduled-reporting systems is a plus.
Experience building AI or agentic systems is a plus.
Actively seeking a path into people management.
Experience mentoring, leading, or informally guiding other engineers.
Operate independently in ambiguity, scoping, sequencing, and driving execution on complex backend problems.
Communicate clearly with engineers and non-technical stakeholders.
Take ownership of what you build in production.

Skills

Backend systems
GraphQL
REST APIs
Reporting systems
AI systems
Mentoring
Technical leadership
People management

Location

London

Work Type

Full-time

Experience Level

Staff-level
Senior

About the Company

The Trade Desk is a global technology company and the world’s leading independent platform for digital advertising.
Our technology helps advertisers reach the right audiences across the open internet.
Advertising powers the content people love, supporting trusted journalism, quality entertainment, and creators worldwide.
The world’s brands and agencies rely on us to reach their customers and grow their businesses responsibly.
The scale of our platform brings unique technical challenges.
We welcome diverse perspectives, encourage curiosity, and build teams that learn from one another.
Our culture is much deeper than just having fun together; we take pride in our engineers being trust-builders, generous givers, scrappy problem solvers, and gritty pursuers of excellence.

Equal Opportunity

The Trade Desk is an equal opportunity employer.
All aspects of employment will be based on merit, competence, performance, and business needs.
We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other status protected under federal, state, or local law.
As an Equal Opportunity Employer, The Trade Desk is committed to creating an inclusive hiring experience where everyone has the opportunity to thrive.
Please reach out to us at accommodations@thetradedesk.com to request an accommodation or discuss any accessibility needs you may require to access our Company Website or navigate any part of the hiring process.
When you contact us, please include your preferred contact details and specify the nature of your accommodation request or questions.
Any information you share will be handled confidentially and will not impact our hiring decisions.